Dowtherm and Dowfrost antifreeze is
specially designed for process chiller systems. All chilled water systems
can benefit from any of Dow's specially inhibited ethylene glycol and propylene
glycol based solutions. Following are some of the different glycol based
solutions and their associated properties.

DOWTHERM SR-1 inhibited ethylene glycol-based fluid. With an
operating temperature range of -60F to 250F, this is the most
widely used fluid for heating and HVAC applications. The
specially formulated corrosion inhibitor package is easily
maintained, long-lasting and replenishable. Fluid color
is pink

DOWFROST HD
inhibited propylene glycol-based fluid. This is
recommended for use where incidental contact with potable water
is possible or where use of a propylene glycol-based fluid is
required by state or local regulations. The recommended use
temperature range is -50F to 325F. A specially formulated
corrosion inhibitor package provides a high level of protection
for all common metals used in HVAC systems. Excellent copper
corrosion protection makes this the preferred propylene
glycol-based fluid for many HVAC applications. Fluid color is yellow.

DOWFROSTinhibited
propylene glycol-based fluid. This
is recommended for use where incidental contact with potable
water is possible or where use of a propylene glycol-based fluid
is required by state or local regulations. This fluid's
recommended use temperature range is -50F to 250F. DOWFROST fluid
features a specially formulated industrial corrosion inhibitor
package that helps keep pipes free of deposits. Fluid is clear.

The first hands
on Chiller/HVAC/R troubleshooting handbook is out in publication. This is
a must have book for you and your service technicians. It will save
you time and money along with passing on the vast knowledge of 60 years
experience.